Year	current US$
1990	5045830862.93918
1991	7035241388.33413
1992	8407190555.93433
1993	8048474503.13753
1994	6200517713.22483
1995	6476448641.24916
1996	4661723199.82081
1997	6509129887.79412
1998	9975295426.85399
1999	8704285645.53864
2000	8179332263.34429
2001	10591651804.4463
2002	7937910389.22059
2003	6191787804.28885
2004	6029139176.83507
2005	5421894514.19248
2006	7838279380.83505
2007	11537354422.4675
2008	12244756772.8059
2009	10271191054.6153
2010	14799138186.678
2011	9565561716.20703
2012	6327395271.62173
2013	10234051197.6874
2014	7490231932.36068
2015	11467505253.4296
2016	11049533905.6708
2017	1756743829.90744
2018	8282605410.18073
2019	18226755423.2504
2020	15654511356.653
2021	-1781279555.10217